12-49962154-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP3BS2

The NM_001651.4(AQP5):​c.137C>T​(p.Ala46Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,460,354 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

AQP5
NM_001651.4 missense

Scores

4
12
3

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.87
Variant links:
Genes affected
AQP5 (HGNC:638): (aquaporin 5) Aquaporin 5 (AQP5) is a water channel protein. Aquaporins are a family of small integral membrane proteins related to the major intrinsic protein (MIP or AQP0). Aquaporin 5 plays a role in the generation of saliva, tears and pulmonary secretions. AQP0, AQP2, AQP5, and AQP6 are closely related and all map to 12q13. [provided by RefSeq, Jul 2008]
AQP5-AS1 (HGNC:55474): (AQP5 and AQP2 antisense RNA 2)

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.779
BS2
High AC in GnomAdExome4 at 7 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
AQP5NM_001651.4 linkc.137C>T p.Ala46Val missense_variant 1/4 ENST00000293599.7 NP_001642.1 P55064

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
AQP5ENST00000293599.7 linkc.137C>T p.Ala46Val missense_variant 1/41 NM_001651.4 ENSP00000293599.5 P55064
AQP5-AS1ENST00000550214.1 linkn.258+513G>A intron_variant 2
AQP5-AS1ENST00000550530.1 linkn.117+513G>A intron_variant 3
AQP5-AS1ENST00000552379.1 linkn.256+513G>A intron_variant 3

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.0000160
AC:
4
AN:
249268
Hom.:
0
AF XY:
0.0000148
AC XY:
2
AN XY:
135252
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000475
Gnomad NFE exome
AF:
0.0000266
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000479
AC:
7
AN:
1460354
Hom.:
0
Cov.:
29
AF XY:
0.00000551
AC XY:
4
AN XY:
726542
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.0000192
Gnomad4 NFE exome
AF:
0.00000450
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
Cov.:
32
Alfa
AF:
0.0000294
Hom.:
0
Bravo
AF:
0.00000378
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.0000247
AC:
3
EpiCase
AF:
0.0000545
EpiControl
AF:
0.0000593

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsAug 07, 2024The c.137C>T (p.A46V) alteration is located in exon 1 (coding exon 1) of the AQP5 gene. This alteration results from a C to T substitution at nucleotide position 137, causing the alanine (A) at amino acid position 46 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.95
BayesDel_addAF
Uncertain
0.050
T
BayesDel_noAF
Benign
-0.10
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.90
D
Eigen
Uncertain
0.53
Eigen_PC
Uncertain
0.34
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Uncertain
0.92
D
M_CAP
Uncertain
0.14
D
MetaRNN
Pathogenic
0.78
D
MetaSVM
Uncertain
0.25
D
MutationAssessor
Pathogenic
2.9
M
PrimateAI
Benign
0.47
T
PROVEAN
Uncertain
-3.4
D
REVEL
Uncertain
0.43
Sift
Uncertain
0.0020
D
Sift4G
Uncertain
0.0030
D
Polyphen
1.0
D
Vest4
0.44
MVP
0.92
MPC
0.80
ClinPred
0.83
D
GERP RS
3.5
Varity_R
0.84
gMVP
0.82

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs199524477; hg19: chr12-50355937; COSMIC: COSV52229215; COSMIC: COSV52229215; API